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netrom: Fix a data-race around sysctl_netrom_transport_requested_window_size

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[ Upstream commit a2e706841488f474c06e9b33f71afc947fb3bf56 ]

We need to protect the reader reading the sysctl value because the
value can be changed concurrently.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jason Xing 2024-03-04 16:20:42 +08:00 committed by Sasha Levin
parent f3315a6eda
commit 652b0b3581
1 changed files with 1 additions and 1 deletions
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2
net/netrom/af_netrom.c
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@ -462,7 +462,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol,
msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_busy_delay));
nr->idle =
msecs_to_jiffies(sysctl_netrom_transport_no_activity_timeout);
nr->window = sysctl_netrom_transport_requested_window_size;
nr->window = READ_ONCE(sysctl_netrom_transport_requested_window_size);
nr->bpqext = 1;
nr->state = NR_STATE_0;